Been a TA when chatGPT was released. Most students shot their own foot this way before we figured what was happening. Grades went from bell shaped to U shaped. A few students got 85+, the rest failed, it was brutal. Thought I failed my students horribly before I found out it was happening in all classes.

If you actually stuck in such a situation, solve as many problems as you can. An approach that will work for most people:

1. Try to solve
2. Fail
3. Take a peek, understand your failure. If the peek didn’t include full solution, go back to step 1. Else continue to step 4.
4. Move to the next question and go back to step 1.

Make sure to skip questions if they are too easy. Evey 4~ hours take a 20 minutes nap (not longer than 25 minutes). If you actually manage to solve enough problems to pass, go to sleep, 4.5 hours or a longer multiplier of 1.5 hours.

After the exam go back and solve all homework yourself. DO NOT cram it, spread it or you will retain nothing long term.

Good luck.